Home / 151,138.59-208,573.02-86,606.55

Finding the Fourth Proportional to 151,138.59, 208,573.02 and 86,606.55

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Solution

The fourth proportional to 151,138.59, 208,573.02 and 86,606.55 is: 119,518.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,138.59 : 208,573.02 = 86,606.55 : x
  2. Step 2: Convert to fraction form
    151,138.59/208,573.02 = 86,606.55/x
  3. Step 3: Cross multiply
    151,138.59x = 208,573.02 × 86,606.55
  4. Step 4: Simplify right side
    151,138.59x = 18,063,789,685.28
  5. Step 5: Solve for x
    x = 18,063,789,685.28/151,138.59
  6. Step 6: Final answer
    x = 119,518.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.